Padlock



April 24. 1928. 1,667,254

- H. HEDRICH PADLOCK Filed April 1927 IN VEN T OR- HHed'rich BY A TTORNEY Patented A pr; '24, 1928.

UN TE vHnRMaNnnDn-Iomoi 'Bn'oo LYn,-NEw YORK.

PAnLoox-J 1 Application filed April. 9,

The inain object o ftliis inrention isito proride a novel type of padlock which is simple in construction, consisting of very 'few parts, inexpensive. in cost of manque ture, and is positive in its locking functions. Another object of'this invention is to -provide .a padlock which has for its principal -teature the characteristic thatit'is doubly:

locked upon withdrawalof a key, and remains locked'even tho the key is inserted until such time as thehasp ofthe padlock manipulated byisliding said' hasp longitudinally along'thebody otthe look after which thehasp can be rotated to theopen position. i

The above apparentin the description. below in which characters of reference refer to like-named parts in thedrawing.

padlock showing; thesanie in closed position.

Figure .2 isa "longitudinal sectional side elevational view of the same. 7 s

Figure 3 isa cross sectional View taken on line Z-.Q'of Figure 2. v T

Figure 1 is; a longitudinal sectional elevational View" taken on line 4 t of Figure 2.

Figure 5 isa perspective view of the key used with the padlock for spreading the locking elements.

Figure 6 is a cross'sectlonal view siniilarber 16 of the inner shell 11 thru slots 15 and 17. The end 14 of the hasp which passes thru the slot 15 has a slot 18 at its lower end across which the stud spans. 7. I 7

Intermediate the length of the inner shell 11 a pin 19 extends diametrically across the inner shell and the ends thereof are anchored in the walls oil the inner shell. The opposing ends of a coil spring 20 are connected to and: other objects will hecoine,

Referring briefly to the drawing, l ligure I 1 i-s'an exterior side elevational vlew oi' the passing therethru Both ends of the hasp pass into the ohain 1927. serial no. 1321201.

spring thru these holes thereafter bending the 'protrudingcnds. Slots Ql areTfOr ned in of'the stud1 3are inserted into the slot the the '13 holes in. 1 thepin and stud and passlng the ends lofthe the. wallfof the inner shell 11 andlthe ends stud [being slidable longitudinally 'inlsaid,

shell and barrel,

The other end of the hasp 12lias aQdo'wn-lj wardly extending tongue integrahtherewith 05 which is indicated bythe nuIneral2B, which tongue extends from the end 22 ofthehasp 12. Th s tongue is provided with n notch 24 forinedin its side, The tongue issqufare in cross sect-ion and its outer side "is pr vided with the"notch whileftwo sides which are at right;anglesto the side harijng'the notch is provided with locking grooves; 25,

one groove on eacliifacefof the tongue, The

entering edge of thetongue is calnlned at 26 which will be hereinafter fully for purposes described.

A ledge 27 lioijizofntally",in the ohalnber '16 tr o'in a plate 28 which latter is mountedadjacentthe end wall 29iof the' r (Said plate and wall .29 having af'slot thru which a k y 30 I inserted. v

A lockingcage is mounted atthe bottom of the inner shell 11. This cageconsistsof a U-shaped member 31 havlng upright resilient walls 32 from which lips 33 extendtoward each other. These lipsare separated by a cl1annel34 into whichthetongue of the hasp inserts;

The key 30 comprises a llat plate which has pair of prongs 35 and'eeextending be I therefrom in parallelrelation. These.l'irolrgs U are separated by a channel 37 wh ch is or SlllllClC-Illt w dth to receive the tongue 23 7 when the keyis being introduced into the padlock. The external corners of the prongs are rounded as shown by the numeral 38 and these rounded portions of the prongs first engage the walls 32 of the looking cage and spread the latter apart.

The user of the padlock must be trained I to use the same as the hasp is doubly locked in'place in the barrel, once with the key and once with the spring 20. The spring being firmly anchored to the pin 19 atone end and at its opposite end secured to the stud l3 norn'ially-slides the latter toward the oppo-v site end ot' the barrel, it being noted that it is desired to lock the same, the tongue 23 is depressed into the slot 17. The rounded end 39 of the tongue passes into the channel 3st and spreads the lips 33 apart until the grooves are aligned with the lips when the resiliency of the walls 2-32 of the age extend the edges of the lips into the grooves 25. As this movement occurs the can'nned nose 26 01' the tongue rides on the edge of the ledge 27 and the entire hasp by this engagement is moved rearwardly against the tension ot the coil spring 20 until the instant that the notch 29 opposes the ledge 27, after which the entire hasp moves -forwardly toward the ledge, the padlock being then both locked against opening without akcy and securely latched. To open the padlock the prongs 85 and 36 are inserted into the barrel thru the wall 29. The rounded ends 01 these prongs are the first portions of the prongs to engage the surfaces of the walls 32 ot the locking cage and spread these walls apart thereby removing the lips from the grooves which disengages the locking means from the hasp but does not disengage the locking means. By sliding the hasp 12 against the tension of the spring in the inner shell until the ledge 27 is removed out of the notch 2st, the latching means is thereafter released and the hasp may be freely rotated to open position.

It is to be noted that certain changes in form and construction may be made withoutdeparting from the spirit and. scope of the invention. i

I claim:

1.1n a padlock. a barrel having slots therein, a curved hasp slidably and pivotally inountedin said barrel, a slidable stud pivoting one end of said hasp in said barrel. said stud being slidable in said barrel, and means in said barrel for simultaneously and a groove oneach of the intersecting sides, a flexible cage engaging said grooves, and a ledge in said barrel engaged normally in said notch for latching said hasp in' locked position. v

3. In a padlock, a barrel, a ledge rigid in said barrel, a unitaryresilientfcage in said barrelnormally in looking position, a hasp pivotallyjmounted in said barrel. a stud 'pivoting said hasp, said stud being slidable in said. barrel, said hasp having a notch thereon, a spring in said barrel normally urging the hasp forwardly to cause the ledge to register in said notch "for latching said hasp. grooves in said hasp, and lips on. the cage engaged normally in the grooves of the hasp when the latter is in locked position/ 4. In a padlock, a barrel, a horizontal ledge mounted rigidly in said barrel, a cage adjacent said ledge, said cage having resilient upright walls thereon. lips projecting from said walls toward each other, said lips being separated by a cl'iannel, a hasp having one end ro'tata-bly and slidably mounted in said barrel, a tongue on the free end of said hasp, said tongue being square, in cross tion and having a notch on one side and grooves on opposing sides, said tongue inserting in the channel to spread the lips apart when being inserted into the barrel.

the lips resting the grooves when said hasp is locked in place, and a key-having prongs thereon; the prongs being inserted into the barrel to spread the walls of the cage to widen the channel and spread the lip out of said grooves.

In testimony whereof I atlix my signature.

HERMAN HEDRICH,

sec- 

